PCS:Slow Framerates with nVidia dual monitor
Slow Framerates with nVidia dual monitor setup
Causes and Solutions
Cause 1 - older nVidia Dual Monitor settings
When using two monitors, the graphics driver attempts to use 3D acceleration for both monitors. The result is that the GPU is required to split its resources across two monitors.
Solution #1: Go into the NVidia Control Panel and set the option "Mult-Disply/Mixed GPU Acceleration" to "Single-Display-Performance-Mode".